Furnace.



A. SMALLWOOD.

FuRNAcE.

APPLICATION FILED APR. I8. |916.

Patented Jan. 7, 1919. 2 SHEETS-suini l I ,www I I Fl.

m W n nu @.m WWA LAD LNE, ARL M S l Patented Ja l Fu APPLICATION Ff 11. 7, 1919. 2 SHEETS-SHEET 2.

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UNITED .STATES lATENTDFFIoE ALFRED sMALLwoon, F nonnen, ENGLAND. t

l FURNCE. l i

I,To fzlllwhom it may concern;

i Be it known thatI, ALFRED SMALLwooD, a. subject of the Kingdomfo Great Britain, residing `at`42 Hargrave Park, Highgate, London, N., in the countyofMiddleseX, England, metallurgist, have invented certain new and useful Improvements in or Relating to Furnaces, of` which the Jfollowing is a specification.

This invention relates to furnaceswofthe" `tion with a jacket flue for heating the contents of the goods chamber.

According to the present invention in such an arrangement, a liue or flues are incorporated, which Hue or flues are in communication on the one hand with the end of the combustion chamber remote from the provision for generating the primary heat, and are on the other hand in communication at intervals along their lengthy with the interior of the hollow floor of the goods chamber, the several means of communication between the said flue or fines and the interior of the hollow i'loor being individually regulable.

The furnace gases from the combustion chamber. can thus be passed directlyor substantiallv directly to various different parts of the Hoor. whereby a greater or lesser heat may be imparted to any part of the floor to thereby etlect an even or an appropriate heating of the goods chamber.

In order that this invention may be clearly understood and readily carried into practice, reference may be had to the appended explanatory sheet ofdrawings, upon which Figure 1 is a side sectional elevation of" a furnace according to the present invention.

Fig'. 2 is a. sectional end elevation of the rfurnace shown in Fig. 1. the plane of section being on line l-2 of Fig. 1.

Fig'. 3 is a section taken onlines 3, 4, of

Fig. l apd Fig. 4 is a section taken on line` 5.6ofFig. 1. y y

In a. convenient embodiment ot the present invention, the furnace structure takes the form of a building having a solidfuel hre grata o or liquid or gaseous fuel t# Specification `of Letters Patenti;

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|` Aspiianbaeieaaprii18,1916.""sefiainaeieaa.

` "uitgefimapelatedVai:l `(me extremity 'and adapted to` communicate with an arched :combustion A chamber extending through'- out` substantially theehtire length ofthe building. 1 Above the arch of the combustion Aare `arra'nged at suitable points, bricks, *uponI the upper surface of which bricks the floor c of the goods `charnbercf` is disposed so aste leave a space 01. At its outlet extremity d, the space c1 above the combustion chamber is placed in suitable communica-tion with flues e, e in the side lwalls of the goods chamber. The lues e, e inthe side wall communicate at the rear end of the furnace' with the flue 7 or flues in the crown by means of the passage y'.

The combustion chamber may be in communication with the hollow floor at its eX- tremity remote from the fire-grate or primary combustion end of the furnace, by

Way of openings z' and the gases in the combustion chamber are passed into longitudinal fines g, g, by way of the opening k which last-mentioned iues may be disposed below the flues e, e, and which tlues g, g' are in communication` with the interior c1 of the hollow iioor, by a series of ports h arranged at intervals along the length of the furnace. and which ports h are individually regulable by means of suitable slabs h', access towhich may be had by way of the openingh".

In connection with the present invention l may employ provision according to which the air for combustion is heated by being passed into the vicinity of the furnace gases when they are passing through the jacket flue in the crown oit the goods chamber.

Furthermore, I may in thepresent furnace incorporate provision for passing heatedair to the combustible at two` points, one of which is the primary point of combustion, the other point of admission of traversed. in which, in such an arrangement, i a part ofthe combustible gases are not 1gnited in view of the fact that insuiiicient air has been admitted at the point of primary ignition. In applying this arrangement to the furnace shown, provision may, `for instance, beprovided for supplying a limited amount of heated air at Vthe bridge and for supplying further heated air directly to the spaceici Within the hollowoor of the goods chamber, so that Within such floor the'combustion of the furnace-gases is completed in the direct vicinity of Iche chamber containing the goods.

l hat; I claim as my invention, and desire tofsecureby 'Letters "Patent is A furnace including afcoinbustiongchamv ber, a goods chamber arranged above said 10 l@pmbassiali calienebe?, shallow floor-provided vl@ 11i/h@ seeds Q, bustiQLwhembers, errenseelaone, sident said f, busti@ ambermdihwng @neef their' ends sqmmunicaten'therewith Such Pasd with inn ividually elnlillayyb anamorf@ ends with lzhe hollow oorifurther passages formed along the end and sides of the goods chamber, the lowerp'ortion of the end wall passage communicating with the hollow floor and the upper end thereof communieating With one end of the side Wall passages, and a hollow ceiling for' 'said goods chamber, `the other end of the side Wall passages communicating With one end of said hollow ceiling. n Witness `whereof -I have" .hereunto 'set 'myliafnd inlbhe'presence ,oftwo wbiesies.

ALFRED sMaLLWooD.

AMBER BBQWN, HQLLIS.

riyergents each,` by addressing the "Commissioner ,of Patents, Washnstglnpe. 

